Question : Which of the following listed is not a feature of organic farming?
Option 1: The non-use of chemical fertilisers and pesticides
Option 2: Soil is nurtured for future use by maintaining micro-organisms
Option 3: Use of synthetic fertilisers
Option 4: Very less energy consumption
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Correct Answer: Use of synthetic fertilisers
Solution : The correct answer is the Use of synthetic fertilisers.
Organic farming is the agricultural practice in which crops are grown without any chemical fertiliser or pesticides. It is a sustainable agricultural practice in which less organic compost, green manure, etc are used. It uses less nutrients from soil, and the soil is nurtured for future use by maintaining micro-organisms. Organic farming was first introduced by Sir Albert Howard, F. H. King, Rudolf Steiner and others.
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Question : Direct conversion of solar energy with the use of a photo voltaic cell results in the production of
Option 1: Optical energy
Option 2: Electrical energy
Option 3: Thermal energy
Option 4: Mechanial energy
Question : The energy that can harness heat stored below the earth's surface is known as:
Option 1: thermal energy
Option 2: nuclear energy
Option 3: tidal energy
Option 4: geothermal energy
Question : According to the Ministry of Power, Government of India, which is the largest energy source of India? (as of March 2023)
Option 1: Hydro power
Option 2: Tidal energy
Option 3: Coal
Option 4: Solar energy
Question : Conversion of sound energy into electrical energy is done by:
Option 1: Solar cell
Option 2: Gramophone
Option 3: Microphone
Option 4: Loudspeaker
Question : Which of the statements is not correct regarding energy?
Option 1: The energy possessed by a body due to its change in position or shape is called potential energy.
Option 2: An object of mass m moving with velocity v has a kinetic energy of (mv)/2.
Option 3: The gravitational potential energy of an object of mass, M raised through a height, H from the Earth's surface is given by MgH.
Option 4: An object in motion possesses what is known as the kinetic energy of the object.
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